发明名称 Vibration and shock resistant liquid crystal display and associated methods
摘要 A liquid crystal display (LCD) includes a first panel assembly and a second panel assembly with a liquid crystal material layer positioned therebetween, and wherein the first panel assembly has a resonant frequency substantially the same as a resonant frequency of the second panel assembly so that the LCD is resistant to damage from vibration. The first panel assembly preferably includes a first cover panel immediately adjacent the liquid crystal material layer and at least one additional panel positioned adjacent the first cover panel Similarly, the second assembly may include a second cover panel immediately adjacent the layer of liquid crystal material and at least one additional panel adjacent the second cover panel. The first panel assembly has substantially matched mechanical properties to the second panel assembly. For example, the substantially matched mechanical properties preferably include a stiffness to mass ratio. In addition, the resonant frequency is preferably a first mode resonant frequency. Accordingly, damage caused by the relative motion between the first and second assemblies is avoided by matching the first and second assemblies. For additional resistance to shocks, each of the assemblies may include a support panel, such as provided by a glass plate A front assembly, may also include at least one filter panel. The LCD may also include a frame mounted around a periphery of the first and second panel assemblies. Preferably, the first panel assembly has a coefficient of thermal expansion substantially the same as a coefficient of thermal expansion of the second panel assembly. For additional comparability, the frame also preferably has a coefficient of thermal expansion substantially the same as the coefficient of thermal expansion of the first and second panel assemblies.
申请公布号 US6252639(B1) 申请公布日期 2001.06.26
申请号 US19970918152 申请日期 1997.08.25
申请人 HARRIS CORPORATION 发明人 GIANNATTO CARL J.
分类号 G02F1/13;G02F1/1333;(IPC1-7):G02F1/133;G02F1/134;H05K5/00 主分类号 G02F1/13
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